Slot Number Question

Jack Hammer (jhammer@us.ibm.com)
Mon, 15 Jan 2001 14:03:25 -0500


My adapter configuration utility needs to instruct the user which physical
adapter needs attention ( when there may be multiple adapters in the system
). My question is : How do I determine the ( machine ) slot number of a
PCI adapter ?

In BIOS and other OS's this may be doneby examining the system's PCI
Routing Tables. I don't think I can get to those from Linux.

PCI Devices are defined by BUS, DEVICE, and FUNCTION. In Linux there
is a function ( defined in pci.h near the end of the file ) called "
PCI_SLOT( devfn ) " but from what I can see this returns what PCI calls
the device. PCI device is not the machine's slot number. This function
even uses the encoded byte which is named devfn ( I assume from PCI
device and PCI function ) , but this function treats it as slot and
function.

Any help is appreciated. Thanks in advance.

Jack L. Hammer
RAID Client/Server Development
IBM Personal Systems Group
(919)-254-8665

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